'Sum' Notation?

• Sep 29th 2010, 10:54 AM
Quacky
'Sum' Notation?
I looked throuh the latex forum, but I can't seem to get the latex to note this correctly:

n
$\sum$
r=1

Above, I typed the n above and the R=1 beneath, but in a question, the sum notation is in the middle of the question, so I don't have this option. :s.

Thanks in advance for any help.
• Sep 29th 2010, 11:06 AM
masters
Quote:

Originally Posted by Quacky
I looked throuh the latex forum, but I can't seem to get the latex to note this correctly:

n
$\sum$
r=1

Above, I typed the n above and the R=1 beneath, but in a question, the sum notation is in the middle of the question, so I don't have this option. :s.

Thanks in advance for any help.

Hi Quacky,

Try this: $\sum\limits_{r=1}^{n}$

Double click on the Sigma notation to see the Latex code used to generate it.
• Sep 29th 2010, 11:09 AM
Quacky
Thanks for the fast response.
• Sep 29th 2010, 11:15 AM
masters
You can also do it this way:

\displaystyle \sum_{r=1}^n

This yeilds: $\displaystyle \sum_{r=1}^n$